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Windows 7: Internet stops working randomly

I have a fresh install of Windows 7 on a (partly) new Desktop. Sometimes suddenly internet gets really slow and stops working.
All other devices in my house (ipad, labtop (XP), phones) have no problems at all. This should suggest it's a problem of my PC but:
Connecting to the WiFi of my neighboor solves the problem!
Must be a problem of my PC and rooter together....

AVG uses a wireless filter that will cause connection problems on wireless machines. If the connection works on your neighbors router then find out which wireless settings he is using then use those settings, generally speaking it's best to use WPA2 security with AES encryption. The wireless channel being used also make's a difference, try changing channels.

Using the mixed mode settings on your DIR-655 will slow it down to wireless G speeds of 54Mbps, the N only settings will get you much more but won't support G clients or below. I'm using the same router by the way, no problems there at all.

I would need to see a screen shot of the ipconfig/all from this machine in order to help more.

Checked wireless settings, all the same but the channel, but I allready changed the channel twice to try but made no difference. Same channel as the neighbors made my router unvisable.
Also the neighbours have a g/b-router. I need it set as mixed as i have an old labtop i use. So even if setting it to N-only it would not be a real solution... I will try anyway to see what happens.

I attached my ipconfig in two parts as i seem to have a lot of "tunnel adapters" ( don't know what that means..)

No problems with the ipconfig. Changing channels to the same as your neighbors should not be making your router disappear for any reason. Try resetting the DIR-655 completely and then type back in all wireless info, set up all up again, be sure and use WPA2 security with AES encryption.

That one legacy machine is slowing down all of your WiFi connections by as much as 6 times, legacy devices and mixed mode settings will bring your connection speeds down by as much as 6 times.

Did a reset, set all as you said. Worked for the rest of the day. Today, same problem again.... N-only did not give problems for half a day.
Seems hopeless..... Now i''m back on the neighbours connection so i can use my Desktop....
I will try N-only for a little bit longer now alltough its not a real sollution...
by the way, when when connection starts to slow down and stops, the mouse starts to act strange as well. Gives hick-up when moving.

You said you have a dir-655 router. Here are some things you can do. Go to router settings page, go to Advanced settings, go to firewall settings. Set both UDP Endpoint Filtering and TCP Endpoint Filtering to Endpoint Independentand save it. Make sure *enable anti-spoofing* is not checked. Now go to *Advanced Wireless*, make sure your transmit power is set to *High*,Beacon period set to *100*, RTS threshold set to 2346. Turn off your *Wifi protected setup*. See if any of this helps. I also have a D-link Dir-655.

Did a reset, set all as you said. Worked for the rest of the day. Today, same problem again.... N-only did not give problems for half a day.
Seems hopeless..... Now i''m back on the neighbours connection so i can use my Desktop....
I will try N-only for a little bit longer now alltough its not a real sollution...
by the way, when when connection starts to slow down and stops, the mouse starts to act strange as well. Gives hick-up when moving.

Other than the endpoint settings all those other settings are Default.

I'd like to see what happens if you uninstall AVG completely from the system.

You should also get rid of the AVG toolbar scanner, use the uninstall tool for this.

The endpoint settings seem to work! (indeed the rest was default) Alltough it's been working for only a short day now. The settings sped up the connection a bit as well.
It has been working for a few days before so i cant be sure jet if it stays. I'll keep you informed. Thanks allready!

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